Grain-sorting machine.



Patented Nov. '27, I900.

J. MAYER. GRAIN SORTIN G MACHINE,

(Application filed Nov. 9, 1899.)

No Model.)

Wiz'nesses In yen for:

THE uonms PEYERS c0 PHOTILLIIHQ. wAsumc-mu, DV 0.

UNrrnD STATES JOHANN MAYER, OF- COLOGNE, GERMANY.

GRAIN-=SORTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 662,454, dated November 2'7, 1900.

I Application filed. November 9, 1899. Serial No. 7361396. \NO model.)

To all 1077/0777, it may concern:

Be it known that I, J OHANN MAYER, manufacturer, a subject of the King of Prussia, German Emperor, and a resident of Cologneon-the-Rhine, in the Kingdom of Prussia, German Empire, have invented certain new and useful Improvements in Grain-Sorting Machines, of which the following is a specification.

This invention refers to grain-sorting machines of the kind in which the grain to be sorted is fed into a rotary sorting-cylinder through a longitudinal slot in the mantle of the same; and my invention relates especially to that form of construction of grainsorting machines as is described in myUnited States application, Serial No. 671,500, filed February 24:, 1898. In that machine the grain is fed from a vertical supply-channel into the sorting-cylinder or into the longitudinal slot of the same, respectively, by the mediation of a flap closing the lower end of the supplychannel and being kept closed until the iongitudinal slot of the constantlyo'otating sorting-cylinder has arrived just in front of said flap, when the latter is freed, so as to swing outward under the pressure or weight of the grain accumulated behind the flap. The latter then forms a bridge for the passage of the grain on its way from the supply-channel to the sorting-cylinder, and as this cylinder continues rotating the lowered flap is again raised until it again attains the position in which it closes the lower end of the supply-channel, when it is again checked until the longitudinal slot of the sorting-cylinder has again arrived in front of the said flap. Owing to the rather great flap being thrown open under the rather heavy weight of the grain and owing to the quickly-moving flap-being suddenly arrested by the one edge of the longitudinal slot aforementioned, there occurs at every time of such transmission of the grain a pretty powerful blow, which causes a correspondingly-strong shock through the entire structure of the machine. The object proper of my invention is to do away with this draw back, and I attain this object by the combinations and arrangements of parts hereinafter described.

In order to make my invention more clear, I refer to the accompanying drawings, in

which similar letters denote similar parts throughout both views, and in which- Figure 1 is a vertical cross-section through a machine having two sorting-cylinders, each of which is furnished with my invention; and Fig. 2 is an enlarged view of some parts of the right-hand clyinder of Fig. 1, which will duly be referred to hereinafter.

The two sorting-cylindersfi each of which is supported and rotated in known manner by rolls 1', are fed from a common reservoir m, delivering the grain by'rotary wings h, that are moved intermittently by any suitable means in such a way that the movement commences in the same momentin which the longitudinal slot at of the sorting-cylinder arrives in front of the eXitbpening of the res ervoir m.

Inside of each sorting-cylinder is located a stationary hopper b, the upper end or upper opening of which is located exactly opposite to the respective exit-opening of the reservoir m. I prefer to secure the hopper to the tray g, that serves for the reception of the impurities removed from the grain by the small cavities at the inner periphery of the sorting-cylinder; but of course the said hoppe-r may be fixed in position also by other means, as the sorting-cylinder is open at and thus aifords access from its two frontal ends. The lower end of the hopper b is provided with a flap c, Fig. 2, attached to the hopper by means of a hinge n, and the flap itself is provided with a projection or pin 7c, over which may take a hook Z of a pawl d. This pawl may be raised by means of a ledge c, secured to the inner mantle-surface of the cylinderf and located shortly behind the longitudinal slot at with regard to the direction of movement of the cylinder. As long as the parts 0, d, and c are in the position shown in full lines in Fig. 2 the grain accumulated in the lower end of the hopper cannot escape; but shortly after the slot a has passed the flap 0 for such a distance that the grain rushing forth from the hopper cannot reach that opening the ledge e pushes against the pawl d, and the latter is now raised, so as to free the pin from the hook Z, when the flap c.will instantly be thrown open under the pressure or weight of the grain. The pawl cl remains in its raised position as long as the ledge e passes along below the pawl, the length of the ledge being such that during this time all the grain contained in the hopper Z) may leave the same. The flap 0 assumes then its former position under its own weight, and instantly thereafter the ledge 9 leaves the pawl d, when this latter will again check the flap by its hook Z taking again over the pin- 70 of the same.-

Having now described my invention, what I desire to secure by a patent of the United States is In combination, a rotary separating-cylinder having an openingin the periphery therepf, a stationary hopper located within the ing device for the catch secured to the interior of the cylinder, substantially as de scribed.

In witness whereof I have hereunto set my hand in presence of two witnesses.

JOHANN MAYER.

Witnesses:

CHAS. E. BARNES, WILLIAM H. MADDEN. 

